Search code examples
pycuda

pycuda -- 'CUDA_ROOT not set, and nvcc not in path.'

Although i had installed pycuda and using it ok,it started (without doing sth) not to work.So,i i tried to do the install again ,but when i am doing

python configure.py --cuda-root=/usr/local/cuda/bin

it gives me the error in the title.

The nvcc file is in the above directory.

Solution

  • pycuda is not finding nvcc. Did you try adding /usr/local/cuda/bin to your env PATH variable? That's the way I have this setup.

    Edit:

    As far as I can tell the configure.py doesn't call nvcc compiler it just creates the the makefile. I take that this problem happens when you run sudo -c "make install" which calls setup.py.

    A couple of things to try. Make sure that you have CUDA_ROOT set:

    echo $CUDA_ROOT

    If it's empty, set it with:

    export CUDA_ROOT=/usr/local/cuda/bin

    Try running the make command again. Now with the -E to preserve your env:

    sudo -E sh -c "make install"